The Dyalog Language Engine

At the heart of Dyalog is an ISO/IEC 13751-compliant APL language engine that has been tuned and optimised for more than 30 years. The current Dyalog language has evolved from a classical APL2-style interpreter into a modern, multi-paradigm programming language. The most important extensions to the original APL language include:

1983: Nested arrays: Any element of an array can be another array (APL2)1990: Namespaces1995: Control structures (If/Then/Else, Repeat/Until, exception handling, and so on)1996: Functional programming: dfns provide lexical scope and lambda-style expressions2006: Object orientated programming, allowing integration with OO frameworks and Microsoft .NET2014: Point-free or "tacit" syntax similar to that in the J programming language2014: Futures and isolates for parallel programming

Dyalog language engines provide the same language features on all platforms and enable extreme inter-operability; binary workspace images and component files can be shared in real time without conversion between all platforms and TCP sockets can be used to exchange binary data between the platforms.